Use optimal buffer size depending on the filesystem containing the file

The st_blksize attribute of struct stat conatains the blocksize for
filesystem I/O (see stat(2)) which is the optimal size for reading/writing
chunks of data.

Based on a patch by Folkert van Heusden

1 files changed, 3 insertions, 0 deletions

diff --git a/inotail.h b/inotail.h
index 4c57867..d1874b5 100644
--- a/inotail.h
+++ b/inotail.h
@@ -7,6 +7,8 @@
 #ifndef _INOTAIL_H
 #define _INOTAIL_H
 
+#include <sys/types.h>
+
 /* Number of items to tail. */
 #define DEFAULT_N_LINES 10
 
@@ -18,6 +20,7 @@ struct file_struct {
 	char *name;		/* Name of file (or '-' for stdin) */
 	int fd;			/* File descriptor (or -1 if file is not open */
 	off_t st_size;		/* File size */
+	blksize_t st_blksize;	/* Blocksize for filesystem I/O */
 	unsigned ignore;	/* Whether to ignore the file in further processing */
 	int i_watch;		/* Inotify watch associated with file_struct */
 };